You may be on to something there. According to a disputed Wikipedia entry, Joseph LaBracio performed in the Four Seasons under the name Joe Long. But there doesn't seem to be any independent confirmation of that, and I know Nick Massi was the original bassist. There does seem to be an organized PR movement claiming that he was, and should have been inducted into the RRHOF with the rest of the band. But he's not mentioned on the Four Seasons official MySpace page. Is it possible he was a hired sideman?